Trolley-wheel guard



Dec. 19, 1922.

` W. STASIAK.

TROLLEY WHEEL GUARD.

FILED APR. L2 1922.

Fael., l.

Patented Dec. 19, 1922.

" STATES:

WALENTY STASIAK, OF lDETROIT, MICHIGAN.

TROLLEYFWHEELGUARD l Application filed April 12, 19'22"l serial Nq. 552,006,

Be it known that I, VALENTY' Sriisnri, a citizen ofthe United States of America, residing at Detroit, in the county of Vayne and State of Michigan, vhave invented certain new and useful mpro-vements in Trolley- W'heel Guards, of which the following is a specication.

This invention relates to certain new and useful impro vements in trolley wheel guards, and has particular reference to a revolubly mounted guard wheel positioned at each side of the trolley wheel to maintain` the trolley wheel in engagement with the trolley wire, and to prevent accidental disengagement between the wheels and wire. i

The invention further embodies in a trolley wheel guard of the type above set forth, :i provision of tensioned antifriction ineinbers interposed between the guard wheels and the trolley wheel.

With the above and other objects 'that will appear as the nature of Athe invention is better ui'iderstood, the saine consists in the novel construction, combination. and arrangement of the parts hereinaii'ter more fully described, illustrated in the acconipanying jli'awings,and pointed out in the appended claims.

ln the iilrawings forming a part of this application ar'E in which like designating characters refer to corresponding parts throughout the several views :e-

Figure 1 is a side elevational view of :i trolley wheel guard constructed in accordance with the present invention,showing the harp of the pole Vand the star-shaped guard wheel at each side of the trolley wheel having` portions overlying the hanged edges of the trolley wheel,

Figure 2 is a side elevational view of the device, and

Figure i3 is an enlarged detail sec-tional view of the anti-friction bearing between the tioiliy wheel and guard wheel.

Referring more in detail to the accompanying drawings` there is illustrated a trolley wheel guard associated with a trol-v ley pole l provided upon the upper end thereof with an U-shaped bracket head f2 having a wheel supporting shaft 3 journaled in the ends of the bracket arms of the bracket head,l spacing washers el being positioned at opposite sides of the arms of the brackets as shown in F and 3, while the shaft is retained in the bracket head b suitable fastening devices such a'scotter pins. j' 'As shownin 3', a bearing sleeve' encloses theshaft 3 intermediate lfh bracket armsQ and engages at' oppositeends, the inwardly positioned Washers 4'." "A trolley Wheel having a grooved periphery 6 and side flanges 7 is journaled centrally of the bearing sleeved, while a guard wheel 8 is joiirnaled on the bea-ring sleeve at each side of the trolley wheel, the inwardly positioned washers 41 engaging the outer faces of the guard wheels 8 as shown in Fig. 3, holding the guard wheels properly positioned relative to the trolley Wheel.

Each guard Wheel is of star shaped formation, each wheel including radial arms 9 Hand an inwardly directed shoulder 10 overlying the adjacent flange 7 of the trolley wheel, the shoiildei' 10 being provided with an opening l1 receiving a bearing ball 12 ;that is spring pressed as rat 13 while said spring is confined within the openingby the screw plug 14 threaded in the outer end thereof as clearly shown in Fig. 3 to coinpensate for friction between the adjacent faces of the trolley wheel and the arms S.

Each arm 'is provided with a transverse opening 15 receiving a bearing ball 16, and a spring y17 which engages the bearingball and is conlined within the openingl by the screw plug`18 entering the threadedjouter end of the opening 15.

From the above detailed description of the device, it is believed that the construction and operation thereof will at once be apparent, it being notedthat when the trolley wheel is in tracking engagement with a trolley wire, the same may revolvel on the shaft 3 independently of the wheels S, the bearing balls l2 and 16 carried by the radial arms 9 of the guard wheels reducing friction between the trolley and guard wheel. The outer ends of the radial arms 9 extending outwardly of the trolley wheel retain the latter in engagement with a` trolley wire, the radial arms preventing accidental disengagenient of the trolley wheel relative to the wire` and also assisting in placing the wheel 'into engagement with the wire.

lhile 4 there is herein shown and described the preferred embodiment of my invention, it is nevertheless to be understood that various forms, modiications and arrangements of the parts may be made Without departing from the spirit and scope l. In a trolley Wheel guard, a head, a shaft therein, a trolley Wheel journaled on said shaft, a guard Wheel journaled on said shaft at each side 0f the trolley Wheel, each guard Wheel including a plurality ofvradial arms, a shoulder carried by each arm overlying the adjacent edge of the trolley Wheel and spring pressed antisfriotion bearing balls carried by the radial arms and arm shouldersv engaging the adjacent faces of the trolley Wheel.

' ing 2. In a trolley Wheel guard, a head, a shaft therein, a trolley Wheel journaled on said shaft, a guard Wheel journaled on said shaft at each side of the trolley Wheel, each .guard Wheel including a plurality of radial arms, a shoulder carried by each arm overlying the adjacent edge of the trolley Wheel eaeh arm and shoulder havan opening therein and a spring pressed anti-friction bearing ball disposed in each opening for engagement With the adj aeent face of the trolley Wheel.

ln testimony whereof l aiiiX my signature.

WALENTY STASIAK. 

